Dynamo-electric machine.



B. S. PILLSBURY.

DYNAMO ELECTRIC MACHINE. APPLICATION FILM JAN. 19,1912,

l, l 22,633. Paente De@ 2,9, i914.

UNITED sra-Tus Parente cierren. l

EDWIN S. PILLSBUBY, OF ST.`1GUIS, MISSOUR, SSIGNOB, TG CENTURYEla'E/CTRC COMPANY, A CORPORATON QF MSSOUE.

DYNAMO-ELECTRIC MACHIIIE.

Application led January 19, 1912.

To all whom it may concern .f

Beit known that I, EDWIN S. PILLSBUHY, a citizen of the United States,residing at 'the city of St. Louis and State of Missouri,

have invented certain new and useful linprovements in Dynamo-ElectricMachines, of which the Jfollowing is a specification.

The principal object of my invention is to provide a new and improvedconstruction for assembling the laminated iron of a dynamo electricmachine.

Another object of my invention is to provide a structure tor assemblingthe laininfe of the 4stator of an electric generator or motor.

A further object or" my invention is to provide means by whichstatorlarninee of a dynamo electric machine may be assembled compactlyin a bundle and thereafter in this unit forni combined in building upthe inachine as a Whole.

rihese objects and various others Will-be appreciated in connection withthe following specification and claims, taken with the accompanyingdrawings. which illustrate two specific' embodiments of my invention. Y

Referring to these drawings-Figure 1is an axial section of an electricmotor embodying my invention; and Fig. 2 is a fragmentary detail sectionshowing one of the fastening screws. Fig. 3 is a perspective view of anut for a fastening screw. v 5

Referring to Fig. l7 the stator laminated iron bundle 34 contained inthedrawn steel shell 38 constitutes an element of the stator 1erame. Theend plates 30 and 31 of thc motor carry the journal bearings for therotor shaft 32 with the rotor 33 mounted thereon. The stator laminatediron is designated '34 and is bounded on each side by rings ofinsulating material 35. Sheet metal rings 36 having the shape in crosssection shown in the drawing are assembled With the laminated iron 34.Each ring 36 has an outside flange 37 over which the end lip 39 of thesteel shell 38 extends. The rnode' o t assembling the parts is asfollows: IThe drawn steel shell 38 is originally prepared With the lip39 at one end, but the other edge projecting uniformly in the generaldirection of the Wall 38 of the shell as a whole. At this stage theshell 38 may be spoken ot as a cup. Into this cup one ring 36 is droppedand its Specicaton of Letters Patent.

Patented Dec 29, Qlet.

serial no. 372,150.

y outwardly. directed Flange 3 7 rests on the inlating ring 35 and thenthe ring 36 with the nuts 40 projecting therethrough, the heads #il ofthese nuts lying in the channel of this other ring 36. Finally theprojectin edge of the shell 38 is spun down over the dange 37 of thering 36, ln this Way the steel laminas are completely asseml'sled, andthe shell 38 Which holds them also holds the rings 36 which ador-d seatsfor the heads ont the nuts 4G. Nefit the end plates 80 and 3l with thearmature mounted therein are clamped i place by the bolts 42 engagingthe nuts 40.

The lug f3 on. the end plate 30 aii'ords a pivotal connection betweenthe stator frame and thebase 4e. Assuming that the motor shown is a fanmotor, the fan can be tilted at any desired vertical angle of adjustmentby means or this pivotal connection with the lug 43. The joint 45permits adjustment around a vertical axis so that the blast of the fancan thereby be directed as desired.

l. ln a device 01' the class described, a bundle of laminee punched fromsheet iron, annular end plates With annular channels therein adjacent tothe bundle of larnin on each end thereot, a. steel shell embracing thelaminas and the outer edges'of ther annular end plates, end framesbeyond the `annular end plates, screws 'passing through holes in saidend frames and directed toward said annularnend plates, and nutsengaging said' screws7 said nuts having heads lying in the channels ot'the annular end plates and naving portions projecting through holes saidannular end plates.

2. In a device of the class described.; a bundle of laminl punched fromsheet lron,

sheet metal end plates on the ends of said bundle5 each said platehaving an annular channel opening; toward the bundle and having holes inthe bottoni ofv such channel, screw-threaded nuts projecting throughsaid holes and with heads lying in the said chanmls, ei mmea @n bgtspyojecting through oles im the end frames and ,engaging @m nuts. l v

31 2in a. device of the dass described, a

5 buxlde of amfse 'plmhadfrom sheet iron, a ,drawn seel shell embrwsingthem', the edges fof h Quali being tamed @over the laminas to ,y clampthem, i'ixgs'with respective channels ,l engaged by said tamed overedges of `the 10 shell, emi frames? and fastening means @11- gagn theendframes iro the flags, sait rixjs ving channes in which poactns ai salaetening means ie. l

n mimony whereof, kfw@ 'subsqr-ibef my mme. A

EDWN S. PILLSBUEY.

Witnesaea: y

H. W. Jmzzrzm, 54mm F.' 0mm

